A person who unblocks you on their buddy list when you were blocked just to look at your profile, and possibly use something from it to put in theirs. Especially when they take something like "Jeanette BB4l" and forget to change the name.

stacey: OMG! lindsay unblocked me for a second and she took that quote from my profile!
Monica: She's a total blocker buddy! she did that to me last week.